Home / 147,142.20-220,130.10-127,637.40

Finding the Fourth Proportional to 147,142.20, 220,130.10 and 127,637.40

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Solution

The fourth proportional to 147,142.20, 220,130.10 and 127,637.40 is: 190,950.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,142.20 : 220,130.10 = 127,637.40 : x
  2. Step 2: Convert to fraction form
    147,142.20/220,130.10 = 127,637.40/x
  3. Step 3: Cross multiply
    147,142.20x = 220,130.10 × 127,637.40
  4. Step 4: Simplify right side
    147,142.20x = 28,096,833,625.74
  5. Step 5: Solve for x
    x = 28,096,833,625.74/147,142.20
  6. Step 6: Final answer
    x = 190,950.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.